1. Walter Reed Army Institute of Research, Washington, D.C. and the Armed Forces Radiobiology Research Institute, Bethesda, Md
2. Division of Immunology, Armed Forces Radiobioloty Research Institute, Bethesda, Md. 20014
3. Work performed while assigned to Division of Radiation Biology, Univ. of Tennessee Medical Units, Memphis, Tenn. 38103
4. Department of Biology, Walter Reed Army Institute of Research, Walter Reed Army Medical Center, Washington, D.C. 20012
5. Division of Radiation Biology, Univ. of Tennessee Medical Units